Please explain your logic? Your post makes very little sense and is equally innaccurate as it is uneducated.

Let us compare the i7-2600k with any non Hexacore i7, as they fall under similar price ranges.

The i7-2600k is faster clock for clock, starts with a faster clock speed, overclocks better and has far better memory throughput.
They both have the same number of cores and are both hyperthreaded.

In performance benchmarks released thus far, there is no doubt that Sandy Bridge outperforms quad core Nehalems.

On a side note, if you are building a new rig, SB will come out slightly cheaper, given current pricing.

i got my hexacore for $240 shipped
im gonna skip SB until IB. Its just odd how so many people are now deciding to trash LGA 1366. Btw is it a guarantee every 2500k or 2600k is gonna hit over 5.0 ghz on air?

Seriously...
My friend was about to blow $1200 on a i7 950 build, until I told him Sandy Bridge is almost released.
He was just so thankful, like as if I saved his life...
You on the other hand, are to be exiled.